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12x-4y=66 12x+9y=27-13y=39 y=-312x+9(-3)=2712x-27=2712x=54x=4.5

REMEMBER: ACC + INF is always the key.
Verb of "saying" + acc. in the indirect statement + infinitive.
E.g. servus dixit equum malum esse. The slave said that the h...

Valence Shell Electron Pair Repulsion Theory (VSEPR) states that lone pairs repel other lone pairs more so than they do bonded pairs. In water, the oxygen atom has two lone pairs. These two lone pairs rep...

An increase in production costs will result in an increase in the equilibrium price. This is because the increase in production cost means that firms will be less willing to supply and therefore there wil...

a + 6b = 8 5th term: a + 18b = 44
term 1: a + 6b = 8term 2: a + 18b = 44
term 2 - term 1: 12b = 36b = 36/12 = 3
a + 6b = 8a + 6(3) = 8a = 8-18 = -10